JP2611577B2 - Insulated air film structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adiabatic air film structure having excellent cooling and heat retaining capabilities.

[0002]

2. Description of the Related Art Conventionally, a large amount of heat insulating material has been used for floors, walls, and ceilings in order to set and maintain the inside of a large space facility at a target temperature. Further, in addition to the means for fixing the heat insulating material, a lining for concealing the heat insulating material is provided. In the case of large space facilities, ceilings and roofing materials require beams and columns to be strong enough to withstand the vertical load of the roof so as not to cause distortion, and considerable technical innovation is introduced compared to ordinary buildings. . For example, a three-dimensional truss or a truss structure roof. Further, in order to reduce the weight of the roof, there are many cases where an arch structure or a beam string is combined with a membrane roof.

[0003]

However, the conventional structure of a conventional building is disadvantageous over a long period of time, both in terms of construction period and cost, and high in cost. Further, in terms of temperature control, the burden has been further increased due to the necessity of using a heat insulating structure. For this reason, there are air membrane roofs that use an air support structure that supports the roof in the internal space.However, the airflow at the entrance and exit openings is large, running costs are high, and membrane roofs are extremely advantageous in terms of construction period and cost. There was, but it was powerless in terms of thermal insulation.

[0004] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a heat insulating air film structure capable of realizing a large space facility having a very short construction period and excellent heat insulation properties. is there.

[0005]

In order to achieve the above object, the heat insulating air film structure of the present invention has a multi-layered membrane roof having an air chamber capable of enclosing and sealing air, and the air chamber of the upper membrane roof. Then, air pressure is applied to the membrane roof enough to introduce tension, and cool and hot air is circulated to the lowest membrane roof in accordance with the room temperature. In addition, in order to stabilize the film roof in order to prevent it from rising and stabilize, the film roof on the uppermost layer of the film roof is pressed from above with a wire cable, and a cable is further passed through the air chamber of the film roof.
The membrane material of the membrane roof was intermittently fixed to the cable. In order to further reinforce, of the membrane roof, the left and right sides of the air chamber of the lowermost membrane roof are formed with an air membrane beam of a second air chamber having a vertically long longitudinal section, to the extent that tension can be introduced to this. The compressed air is enclosed to maintain the air chamber space of the membrane roof in the lowermost layer. When simplifying the structure of the building, the multilayer membrane roof is used as an arch to double as the outer wall of the building.

[0006]

The membrane roof is stretched into a predetermined shape by the pressure of the air that pressurizes and inflates the air with high heat insulation to the air chamber of each membrane roof. Insulate with air in each air chamber from the top layer to the lower membrane roof. This also makes it possible to construct a large space without the need for a large frame supporting the membrane roof. Furthermore, although the lowermost membrane roof is in contact with the indoor space, the air chamber is located between the upper membrane roof and the indoor space, and the air at the indoor set temperature or a close temperature flows therethrough. Ensure thermal isolation from In order to stably secure these membrane roofs, wire cables are laid around them to suppress the rise and at the same time fix both ends of the cables passing through the air chamber of the top membrane roof, thereby stopping the lateral movement of the membrane roof. You can do it. The air chamber of the membrane roof located at the lowermost layer forms and holds the space of the air chamber by pressurizing the second air chambers on the left and right side surfaces. That is, the second air chamber forms a beam of the air film, holds the lowermost air chamber space, and forms an air duct that allows air flow at a target temperature due to low pressure. If the membrane roof is formed into an arch and both ends are connected to anchors, the membrane roof also serves as the outer wall, so that air supply to each air chamber is completed and at the same time constitutes a large space facility at the target temperature.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a cross section of an insulated air film structure in which an outer wall is omitted by forming an insulated roof 1 into an arch shape. This embodiment is a refrigerated warehouse 3 using an insulated roof 1 having an insulated air film structure. In the case of a storage room, the point that cold air is used is different, and the structure of the roof 1 is the same in each case. For convenience of explanation, the refrigerated warehouse 3 will be exemplified and described below. The heat-insulating roof 1 has a tubular shape in which an upper membrane roof 5 and a lower membrane roof 7, which are upper and lower two layers, pass through in the left-right direction. As shown in the cross-sectional view taken along the line II-II in FIG. 2 and viewed in the direction of the arrow in FIG. 2, it has a cylindrical shape in which the front-rear direction is intermittently closed at regular intervals. The upper surface of the membrane roof 5 is stretched horizontally and vertically, and is held down by wire cables 9 having both ends as anchors, and compressed air is supplied and sealed in the air chamber 11 obtained by making it cylindrical. Cool air is circulated and sent to the air chamber 11a of the lower membrane roof 7. The lower end of the heat-insulating roof 1 is closely connected and fixed to the foundation 3. When compressed air is supplied to the air chamber 11 by the compressor 13, tension acts on the membrane material constituting the upper membrane roof 5, and the dome-shaped refrigerated warehouse 3 is operated together with the holding of the wire cable 9. Form.

On the other hand, cool air in the refrigerated warehouse 3 is circulated through the air chamber 11a of the lower membrane roof 7. The cool air in the air chamber 11a is sucked from one end of the air chamber 11a through the intake duct 15, passed through the refrigerator 17, cooled to the target temperature, and then supplied to the cold storage 3 space by the cool air blower 19 to be discharged. I have. On the other hand, the air in the refrigerated warehouse 3 is taken in and sent to the other end of the air chamber 11a by the push-in fan 21. This air is sent through the air chamber 11a and the intake duct 15 on the opposite side.
, And from the refrigerator 17 through the blower 19 again, through the interior of the warehouse 3 space, into the circulation path returning from the fan 21 to the air chamber 11a. Therefore, the circulating air in the air chamber 11a of the lower membrane roof 7 always maintains a low temperature. Therefore, the outside air and the inside of the refrigerated warehouse 3 are insulated by the room temperature air layer and the inside low temperature air layer. By the way, as described above, this insulated roof 1
Since compressed air is applied to the upper air chamber 11 to obtain the desired shape by the internal pressure of the air chamber 11, there is no need to apply pressure inside the refrigerated warehouse 3. Therefore, the lower air chamber 11a is not pressurized at all, and may be considered to be the same as the outside air pressure. In order to maintain the flow of cool air through the air chamber 11a well, the second air chamber beam should be called. An air chamber 23 is formed. As is clear from FIG. 2, the lower membrane material forming the air chamber 11 of the upper membrane roof 5 is defined as the upper side of the air chamber 11a of the lower membrane roof 7, and a cylinder having a semicircular cross section is provided on the left and right side surfaces. An elliptical second air chamber 23 is formed by adhering back to back. On the upper membrane roof 5, another wire cable 9a orthogonal to the wire cable 9 is stretched. Further, a resin-coated cable 25 connecting both ends thereof is stretched inside the air chamber 11 to reinforce the upper layer membrane roof 5 and to prevent swinging back and forth. When the compressed air is sent into the second air chamber 23 and pressurized, the compressed air becomes a target elliptical shape, maintains the shape of the air chamber 11a of the lower membrane roof 7, and supports the air flow path. As in this embodiment, a large space having excellent heat insulation properties is formed without providing a frame, and can be applied not only to a refrigerated warehouse but also to a skating rink and the like.

[0009]

As described above in detail, according to the heat insulating air film structure of the present invention, the air chamber capable of enclosing and sealing air is formed in multiple layers, and the roof is not supported by the air pressure in the indoor space. The tension is introduced into the membrane roof by pressurizing and sealing the air in the air chamber of the upper membrane roof except at least the lowermost layer, so that it is possible to create a large space without a frame and to reduce the running cost. is there. In addition, since the cold air is circulated in the air chamber of the lowermost membrane roof in accordance with the indoor setting temperature, the thermal shielding efficiency between the indoor temperature and the external temperature is high, and since air is used, it is safe, It is extremely excellent in that it can complete a low-cost, high-insulation-efficiency refrigerated warehouse in a short time. Furthermore, if the outer wall of the building body is omitted by making the insulated roof into an arch, the building body is light, so that pile work that reaches the supporting ground is not required unless the ground is particularly bad. Since it is not an air-supporting structure, the airflow at the entrance / exit opening is, of course, small, and the entrance / exit requires no special measures. When the membrane material of the membrane roof is intermittently fixed to this cable by holding it from above with a wire cable and also passing the cable into the air chamber of the membrane roof, it is possible to stably insulate the roof without relying on the material strength of the membrane roof Can be fixed.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view for explaining the overall configuration of an embodiment.

FIG. 2 is a view taken in the direction of arrows II-II in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulated roof 3 Refrigerated warehouse 5 Upper-layer membrane roof 7 Lower-layer membrane roof 9 Wire cable 11 Air chamber 13 Compressor 15 Intake duct 17 Refrigerator 19 Blower 21 Push-in fan 23 Second air chamber 25 Coating

Claims (4)

(57) [Claims] 1. A membrane roof having an air chamber capable of enclosing and sealing air is formed in a multi-layer structure, and an air pressure sufficient to introduce tension into the membrane roof is applied to an air chamber of an upper membrane roof. An adiabatic air film structure characterized by cooling and hot air circulating at the lower temperature of the film roof in accordance with the set indoor temperature. 2. The membrane roof on the uppermost layer of the membrane roof is pressed down from above with a wire cable, a cable is passed through the air chamber of the membrane roof, and the membrane material of the membrane roof is intermittently passed through the cable. The heat insulating air film structure according to claim 1, wherein the structure is fixed. 3. An air film beam composed of a second air chamber having a vertically long longitudinal section is formed on the left and right side surfaces of an air chamber of a lowermost membrane roof of the membrane roof. The insulated air film structure according to claim 1 or 2, wherein compressed air is enclosed to hold an air chamber space of the film roof in the lowermost layer. 4. The insulated air film structure according to claim 1, wherein the multilayer film roof serves as an outer wall of the building with an arch.